New Product Release: Serial RS232 to 900MHZ Radios

summarize

The WE-WM900 is a built-inDigiThe serial RS232 to wireless 900MHz communication radio device of XBee module of the company, users can complete the wireless 900MHz to serial function without development. The serial RS232 port is provided in the form of 8-pin female connector, which can realize the transparent conversion from RS232 interface to 900MHz DigiMesh, and the output power of RF terminal is up to +24dBm, and the line-of-sight transmission distance is up to 15.5km@5dbi antenna.

Contacts

WM900 Product Features

• Serial port support RS-232, baud rate range 2400bps ~ 230400bps;
• With 64 physical frequency bands, it can effectively avoid its own band interference, as well as carrier band interference;
• RF Characteristics: Output power: +24dBm, Receive sensitivity: -102dBm;
• Eight-segment PAN IDs, in different network segments, can distinguish the network from the software without interfering with each other;
• Supports DigiMesh wireless networking with up to 65536 DigiMesh nodes within the same PAN ID;
• Supports serial port passthrough mode and API mode;
• Serial port parameters [baud rate, data bits, parity bits, stop bits] are configurable:
• RF rate: 250Kbps;
• Input voltage: 9~24V;
• Maximum operating current: 250mA@DC9V;
• Working temperature: -40℃ ~ +85

Usage

point-to-point transmission

WE-WM900 can realize the wireless 900MHz transmission application from serial device A to serial device B by simple configuration.

DigiMesh Networking Serial Transmission

Multiple WE-WM900 radios can be used together, each radio can act as a transmission node for other radio network routing, two WE-WM900 radios when the transmission distance is too far away when you can use the other radio nodes in the network to jump over, the distance is no longer an obstacle to hinder the application of the user's obstacles.

API communication

In addition to the commonly used serial port pass-through application functions, WE-WM900 radio also provides users with the API communication mode, which means that the external controller can realize the functions of sending data or executing serial port AT commands by sending command frames in a specified format to the serial port of WE-WM900. In API mode, WE-WM900 is able to realize more functions than in passthrough mode.

The API frame format of the WE-WM900 radio is defined as shown in Figure 4-2 below, including a fixed frame header of 1 byte, a frame length of 2 to 3 bytes, frame data of 4 to n bytes and a checksum of 1 byte